104 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



Genus AMPHIBLESTRUM Gray, 1848 



AMPHIBLESTRUM PAPILLATUM Busk, 1885 



Plate 7, fig. 8 



1885. Amphibleslrum papillatum Busk, Report on Polyzoa collected by the 

 Challenger, vol. 10, pt. 30, p. 66, pi. 33, fig. 1. 



Our specimens were dead. The small interzooecial avicularium is 

 rare and inconstant. The ancestrula is membraniporoid. The distal 

 part of the mural rim bears 6 spines leaving only traces after their 

 decay. 



Measurements. — 



~ . \ho =0.20 mm. n . \Lz =0.50 mm. 

 Opesium 7 Zooecium 7 _ 



[lo =0.14 mm. [Iz =0.24-0.30 mm. 



In 1917 and 1920, when the ovicell of this species was not known, 

 and misled by the incorrect synonymy of Waters, 1898, we quoted this 

 species as the genotype of Membrenoecium, although our generic 

 diagnosis was based on M. pyriforme, a new species from the Jack- 

 sonian and Vicksburgian. We believe' it reasonable to retain Mem- 

 brendoecium with M. pyriforme as the type, since this species possesses 

 the generic characters as given by us. 



Occurrence.— D. 5179. Romblon Light, Romblon; 12° 38' 15" N.; 

 122° 12' 30" E.; 37 fathoms; hard S. 



Geographic distribution. — Pacific: Philippine Islands (29 meters), 

 11° 37' N.; 123° 31' E. 



Plesiotype— Cut. No. 7879, U.S.N.M. 



Genus ELLISINA Norman, 1903 



ELLISINA CORONATA Hincks, 1881 



Plate 7, figs. 9, 10 



1881. Membranipora coronata Hincks, Contributions toward a general His- 



tory of Marine Polyzoa, Annals and Magazine Natural History, ser. 3, 

 vol. 7, p. 34, 81 (sep.), pi. 10, fig. 1. 



1882. Membranipora hastilis Kirkpatrick, Annals and Magazine Natural His- 



tory, ser. 5, vol. 9, p. 188, pi. 5, fig. 3. 

 1890. Membranipora coronata Kirkpatrick, Polyzoa from Torres Strait, 



Scientific Proceedings Royal Dublin Society, vol. 6, p. 615. 

 1898. Membranipora coronata Waters, Observations on Membraniporidae. 



Linnean Society's Journal, Zoology, vol. 26, p. 669. 

 1920. Ellisina coronata Canu and Bassler, North American Early Tertiary 



Bryozoa, Bulletin 106, U. S. National Museum, p. HO. 5 

 1926. Setosellina coronata Harmer, Polyzoa Siboga Expedition, p. 265, pi. 16, 



figs. 3, 4. (Bibliography.) 

 Not 1888. Membranipora coronata Jullien, Mission Scientifique du Cap Horn, 



Bryozoaires, p. 76 ( = M. incrustans according to Waters). 



Our discussion of this species in 1920 is incorrect and was based on incomplete published figures. 



